San Diego County, San Diego Rat Control Situation:
Hi David, Is a UV blacklight still useful, exterior-wise, if it rains after the rodents leave their urine stains? I am in the process of performing exterior maintenance to better exclude my roof rats. 1) I have a 25 year old cedar shake roof in San Diego California with openings under each shake along the rake edge of the roof at the gable ends of my house. There's no drip edge, i.e. under the shakes I have roofing paper (now somewhat curled) that runs more or less up to and rests right atop the fascia board. Because I have skip sheathing, and since the cross section of a shake is a wedge that is up to one inch at the upper, thick end, this appears to create many huge entry points along the rake edges even though the sheathing is rabbeted into the fascia board. As a result, I'm thinking of getting a UV blacklight to use outside the house to sleuth for urine stains along the upper edge of the gable end shakes and fascia boards. My question is, how easily does the winter rain wash away the urine, rendering this a pointless exercise? 2) I noticed a new product called "rat-out gel" and was thinking of applying it along the rake edges mentioned above. Or, maybe I should just buy many rolls of X-Clude and use that instead. Or maybe both. Any comment? Thanks very much for your website, Doug
My response: First off, I do not have experience using UV lights to detect rat urine. But I do suspect that rain will severely limit the effectiveness of this approach. I have never heard of Rat-Out Gel or XClude, but I typically stick to physical barriers rather than repellent type devices. If your roof makes this impossible, you might have a tough time keeping the rats out.
San Diego Rat Control Tip of The Week
What Surfaces Are Rats Able To Climb?
Discovering rodents on your rooftop or in your attic may surprise you. These are places that are, to some degree, difficult to reach and require some uncommon climbing capacity. For rodents, however, that isn't that difficult to manage. Rats are astonishing climbers. They can climb anything. If there is something to hold on to, they can climb it. To get to food and water and their home, they will climb anything. From trees to blocks to stone, they will climb it. This implies they can get into pretty much anything. It doesn't make a difference if it is an opening at base level or in the rooftop, they can get to it.
Extraordinary Climbers
Most rodents are good climbers. Squirrels, mice, rats, and other rodents can climb pretty much anything. It is of nothing unexpected to individuals who see them frequently; however, the degree of their climbing capacity despite everything is surprising to a few. Climbing trees, plants, and anything with a good foothold is no problem. They can snatch on and climb any of that to get to where they need to go. A lot of people expect this as they see it often in rodents like squirrels.
What It Means For You
It is impressive, however, it tends to be a real torment for homeowners. Since rodents are astounding climbers, they can get into any place. If there is an opening anyplace in your home, rodents can arrive at it. They get into these openings and make their homes in a matter of moments, causing chaos. This is why extra care is required when it comes to sealing any potential holes. Since rodents can fit through even tiny spaces, you want to limit their options.
